String Operators
There are two string operators. The first is the concatenation
operator ('.'), which returns the concatenation of its right
and left arguments. The second is the concatenating assignment
operator ('.='), which appends the argument on the right side
to the argument on the left side. Please read Assignment Operators
for more information.
<?php
$a = "Hello ";
$b = $a . "World!"; // now $b contains "Hello
World!"
$a = "Hello ";
$a .= "World!"; // now $a contains "Hello
World!"
?>
See also the manual sections on the String type and String
functions.
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